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Transmission and full-band coherent detection of polarization-multiplexed all-optical Nyquist signals generated by Sinc-shaped Nyquist pulses.

Zhang J, Yu J, Chi N - Sci Rep (2015)

Bottom Line: All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system.In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection.Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

View Article: PubMed Central - PubMed

Affiliation: Department of Communication Science and Engineering, and Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Road, Shanghai 200433, China.

ABSTRACT
All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system. In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection. Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

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Related in: MedlinePlus

Pulse power differences in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with power difference represented as Att1 (the second pulse); (b) two pulses with same power differences represented as Att1 and Att2, and Att1 = Att2; (c) two pulses with opposite power differences, represented as Att1 and −Att2, and Att1 = −Att2.
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f13: Pulse power differences in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with power difference represented as Att1 (the second pulse); (b) two pulses with same power differences represented as Att1 and Att2, and Att1 = Att2; (c) two pulses with opposite power differences, represented as Att1 and −Att2, and Att1 = −Att2.

Mentions: We also study the impact of power differences of the pulses in the different tributaries for TDM. Since the receiver-side adaptive equalization is based on the identical average-power of each pulse, the power imbalance can cause large penalty due to the error fluctuations in the convergence process of the taps of adaptive equalizers. Similar to the cases in Fig. 11, we also test three different cases as shown in Fig. 13. Figure 13(a) is the case where only one pulse (the second pulse) has smaller power difference, represented as Att1. The other two cases, shown in Fig. 11(b,c), are more complicated. The second and fourth pulse are assumed with same or opposite power differences, represented as Att1 and Att2. In Fig. 13 (b), Att1 = Att2 and in Fig. 13(c), Att1 = −Att2. When the attenuation value is negative, it means the pulse has larger average power.


Transmission and full-band coherent detection of polarization-multiplexed all-optical Nyquist signals generated by Sinc-shaped Nyquist pulses.

Zhang J, Yu J, Chi N - Sci Rep (2015)

Pulse power differences in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with power difference represented as Att1 (the second pulse); (b) two pulses with same power differences represented as Att1 and Att2, and Att1 = Att2; (c) two pulses with opposite power differences, represented as Att1 and −Att2, and Att1 = −Att2.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4555172&req=5

f13: Pulse power differences in orthogonal time-division multiplexing (orth-OTDM).(a) Only one pulse with power difference represented as Att1 (the second pulse); (b) two pulses with same power differences represented as Att1 and Att2, and Att1 = Att2; (c) two pulses with opposite power differences, represented as Att1 and −Att2, and Att1 = −Att2.
Mentions: We also study the impact of power differences of the pulses in the different tributaries for TDM. Since the receiver-side adaptive equalization is based on the identical average-power of each pulse, the power imbalance can cause large penalty due to the error fluctuations in the convergence process of the taps of adaptive equalizers. Similar to the cases in Fig. 11, we also test three different cases as shown in Fig. 13. Figure 13(a) is the case where only one pulse (the second pulse) has smaller power difference, represented as Att1. The other two cases, shown in Fig. 11(b,c), are more complicated. The second and fourth pulse are assumed with same or opposite power differences, represented as Att1 and Att2. In Fig. 13 (b), Att1 = Att2 and in Fig. 13(c), Att1 = −Att2. When the attenuation value is negative, it means the pulse has larger average power.

Bottom Line: All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system.In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection.Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

View Article: PubMed Central - PubMed

Affiliation: Department of Communication Science and Engineering, and Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Road, Shanghai 200433, China.

ABSTRACT
All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system. In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal generation based on Sinc-shaped Nyquist pulse with advanced modulation formats, fiber-transmission and single-receiver full-band coherent detection. Using this scheme, we have successfully demonstrated the generation, fiber transmission and single-receiver full-band coherent detection of all-optical Nyquist PDM-QPSK and PDM-16QAM signals up to 125-GBaud. 1-Tb/s single-carrier PDM-16QAM signal generation and full-band coherent detection is realized, which shows the advantage and feasibility of the single-carrier all-optical Nyquist signals.

No MeSH data available.


Related in: MedlinePlus